Figuring out the temp guage, what degrees are the positions between C and H
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Figuring out the temp guage, what degrees are the positions between C and H
Well since my v8 swap was completed I realized I have no idea what temp my motor was running at, I didn't think too much about because the temp gauge hung right below the 1st quarter on the gauge. But then last week it hit 90+ degrees and my temp gauge went almost past half way and I freaked. So I decided I would do an experiment and document every thing for my fellow FB owners. The test was simple, hook up a mechanical gauge and compare to the stock gauge. Both mechanical gauge probe, and stock mazda temp sender were located 3" apart in the same coolant channel that runs between the 2 heads. The Mechanical gauge is a $18 Sunpro gauge from Autozone I know it's not a world class instrument, but it's been my experience that they are more then accurate enough. The stock temp gauge sender is a BWD replacement sensor, works exactly like the oem mazda one did. There is nothing to crazy about my cooling setup, my motor is a 93 ford 5.0 HO, with a 160F thermostat, stock thermostat on this motor was 195F. Radiator is your typical speed shop radiator, with a pusher electric fan, I know pushers aren't as efficient but it was the only way it would fit. As for the test it was simple, turn the car on with the E-fan off and take many pics with the 2 gauges side by side.
And on with the test.
The car is a 1985 gs, originally 12a equipped.
Pic of both senders they are the brass bits on the edges of the photo
And on with the test.
The car is a 1985 gs, originally 12a equipped.
Pic of both senders they are the brass bits on the edges of the photo
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